New Jersey and Florida account for almost half of the 50 U.S. counties whose housing markets are most vulnerable to the economic effects of the coronavirus, an Attom Data Solutions report said.
Attom ranked 483 counties across the country based on the percentage of housing units receiving a foreclosure notice in the fourth quarter, the number of underwater properties in each county and the percentage of local wages required to pay for major homeownership expenses.

Thirty-six of the top 50 most vulnerable counties had median home prices in the $160,000-to-$300,000 range, the report noted.
Of the 10 most vulnerable counties, six are in New Jersey, including Sussex at No. 1 and Warren at No. 2.
"It looks like the Northeast is more at risk than other areas," Todd Teta, Attom's chief product officer, said in a press release. "As we head into the spring home buying season, the next few months will reveal how severe the impact will be."
Among the New Jersey counties that would be most affected, five are in the New York metropolitan area: Bergen, Essex, Passaic, Middlesex and Union. However, of the four counties in New York that Attom considered to be most vulnerable, only Rockland was in proximity to New York City.
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Brooksley Born is the former chair of the Commodity Futures Trading Commission.
Prof. Johnson is the Ronald A. Kurtz (1954) Professor of Entrepreneurship at the MIT Sloan School of Management. He is also a senior fellow at the Peterson Institute for International Economics in Washington, D.C., a co-founder of BaselineScenario.com (a much cited website on the global economy), a member of the Congressional Budget Office's Panel of Economic Advisers, and a member of the FDIC's Systemic Resolution Advisory Committee. He is also a member of the private sector systemic risk council founded and chaired by Sheila Bair in 2012. Prof. Johnson is a weekly contributor to NYT.com's Economix, is a regular Bloomberg columnist, has a monthly article with Project Syndicate that runs in publications around the world, and has published high impact opinion pieces recently in The Washington Post, The Wall Street Journal, The Atlantic, The New Republic, BusinessWeek and The Financial Times, among other places. In January 2010, he joined The Huffington Post as contributing business editor. Professor Johnson is the co-author, with James Kwak, of 13 Bankers: The Wall Street Takeover and The Next Financial Meltdown, a bestselling assessment of the dangers now posed by the U.S. financial sector (published March 2010) and White House Burning: The Founding Fathers, Our National Debt and Why it Matters to You (April 2012). In his roles as a professor, research fellow and author, Professor Johnson's speaking engagements include paid appearances before various business groups, including financial institutions and other companies, as well before other groups that may have a political agenda. He is not on the board of any company, does not currently serve as a consultant to anyone, and does not work as an expert witness or conduct sponsored research. His investment portfolio comprises cash and broadly diversified mutual funds; he does not trade stocks, bonds, derivatives or other financial products actively. From March 2007 through the end of August 2008, Prof. Johnson was the International Monetary Fund's Economic Counselor (chief economist) and Director of its Research Department. He is a co-director of the NBER Africa Project, and works with nonprofits and think tanks around the world. Johnson holds a B.A. in economics and politics from the University of Oxford, an M.A. in economics from the University of Manchester, and a Ph.D. in economics from MIT. He won the Nobel Prize in Economics in 2024.
For New York City proper, all five boroughs were in the middle of the list: Staten Island was ranked 161, Queens was 271, Manhattan at 312, Brooklyn at 320 and the Bronx was 327.
Most of the Florida counties considered at risk are in the northern and central portions of the state. But Broward County, which includes Fort Lauderdale, is also on that list.
There were four counties in the metro Chicago area on the list were Kane, Lake, McHenry and Will in Illinois. Cook County, which includes Chicago proper, is ranked 53rd most vulnerable.
Meanwhile, the only California county on the 50 most vulnerable list is Shasta. Los Angeles County was No. 276. The Bay Area counties were also in the bottom half of the list.
At the other end of the spectrum, 10 of the counties where the housing market is least vulnerable to the coronavirus are in Texas. Seven are in Wisconsin and there are five in Colorado.
King County in Washington, where Seattle is located, was the 20th least vulnerable county according to Attom.